Flow regulator



FIG. 1 is a top plan view of a flow regulator in accordance with my design;

FIG. 2 is a top, front perspective view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a bottom, front perspective view thereof;

FIG. 5 is an elevational view thereof; and,

FIG. 6 is a bottom, front perspective view showing an alternate position of one component of the design.

The broken lines illustrated form no part of the claimed design. 

The ornamental design for a flow regulator, as shown and described. 